GENERAL WIRING COLOR CODE
Color
Use
Green or green w/yellow stripe(s)
DC Grounding Conductors
Black or Yellow
DC Negative Conductors
Red
DC Positive Conductors
Engine and Accessory Wiring Color Code
Colour
Item Use
Yellow w/red strip (YR)
Starting circuit
Starting switch to solenoid
Brown/yellow stripe (BY) or Yellow
(Y) – see note
Bilge blowers
Fuse or switch to blowers
Dark Gray (Gy)
Navigation lights
Fuse or switch to lights
Tachometer
Tachometer sender to gauge
Brown (Br)
Generator armature
Generator armature to regulator
Alternator charge light
Generator
Terminal/alternator
Auxiliary terminal to light to
regulator
Pumps
Fuse or switch to pumps
Orange (O)
Accessory feed
Ammeter to alternator or generator
output and accessory fuses or
switches
Distribution panel to accessory
switch
Purple (Pu)
Ignition
Ignition switch to coil and electrical
instruments
Instrument feed
Distribution panel to electric
instruments
Dark blue
Cabin and instrument lights
Fuse or switch to lights
Light blue (Lt Bl)
Oil pressure
Oil pressure sender to gauge
Tan
Water temperature
Water temperature sender to gauge
Pink (Pk)
Fuel gauge
Fuel gauge sender to gauge
Green/stripe (G/x)
Tilt down and/or trim in
Tilt and/or trim circuits
Except G/Y
Blue/stripe (Bl/x)
Tilt up and/or trim out
Tilt and/or trim circuits
